Re: re Gretag ColorChecker DC and camera profiles
Re: re Gretag ColorChecker DC and camera profiles
- Subject: Re: re Gretag ColorChecker DC and camera profiles
- From: Peter E Siegel <email@hidden>
- Date: Wed, 20 Jun 2001 18:04:21 -0400 (EDT)
On Wed, 20 Jun 2001, Peter E Siegel wrote:
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Hi Eric,
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I have had similar experiences using the Gretag DC color checker target.
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Basically it doesn't work for fine color reproduction with the Phase Ine
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FX devices. I can't speak for other digital camera's because I have none
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to test. I found that taking Phase One's canned profile and tweaking it
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gave the best but far from perfect results.
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We actually color match locally on our repro-stations using a D-50
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proofing standard.
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best regards,
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Peter
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> Message: 9
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> Subject: Gretag ColorChecker DC and camera profiles
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> To: email@hidden
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> From: email@hidden
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> Date: Tue, 19 Jun 2001 09:48:50 -0400
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> Has anybody had any first-hand experience with the new chart and PhaseOne
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> cameras? We have been using ColorBlind Professional 4.0 to make camera
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> profiles for our PhotoPhase scanning back cameras and the results have been
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> unacceptable. The captures taken with the new profiles are very noisy, have
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> posterized highlights, and have a pink cast in certain tonal ranges (mostly
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> lighter areas). I have two theories here:
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> 1)ColorBlind blows. The procedure for using their product with the new
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> chart is really kludgy (I have a 5 page PDF if anybody is interested).
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> Would a software package that is fully compliant with this chart yield
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> better results (like ProfileMaker Pro)?
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> 2)The camera software is choking on the more complex profile. These cameras
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> are going on four years old now and maybe the software just can't cope with
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> the new profiles? We have been using profiles generated with the standard
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> target for years now with successful results.
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> I like the idea behind the new chart. More patches should yield a better
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> camera profile, but not so in our case. anybody else experiencing these
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> problems?
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> Feel free to contact me off-list.
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> cheers,
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> -eric-
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> email@hidden
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___________________________
Peter Siegel
Head of the Digital Imaging and Photography at
Harvard University Art Museums & Fine Arts Library
tel. 1-617-495-4846
email. email@hidden
addr. 32 Quincy Street
Cambridge, MA 02138
USA